Fun concept! There's less between the center of the screen and the top of the screen than there is to the left or right side and the center. For this type of game, I'd make it a square aspect ratio, otherwise stuff coming from the top or bottom feels too hard and unfair. I'd also slow the projectiles down just a little bit, as it felt very unforgiving at times. Aside from that, I thought this was fun! Would love if you left my team's game a review as well :)